What is the registered office of the undertaking?

The Chamber of Commerce establishment address, not the correspondence address

The establishment address is the address where the enterprise is actually established, as registered in the trade register of the Chamber of Commerce. When a supplier list asks for the "establishment address", this almost always refers to this Chamber of Commerce address, not a PO box or the address of an accountant. The supporting document for this is the extract from the trade register: it lists the visiting address separately from any different postal address.

For enterprises with multiple establishments — a head office and one or more branch offices — the customer often specifically asks for the head office, unless the list clearly requests the supplying or contracting establishment. If this is not explicitly stated, it is customary to provide the address of the head office and to clarify this in the free-text field if the list provides space for it. Those who supply internationally often receive this question in combination with in which countries the enterprise has establishments — the two answers should match each other: the establishment address of the head office must logically be located in one of the specified countries.

Legal basis: Trade Register Act 2007

The fact that the establishment address is a fixed, verifiable piece of information follows from the Trade Register Act 2007: this act regulates which data of each enterprise are recorded in the trade register, including the address of the establishment. Because this information is already registered with the Chamber of Commerce, a separate statement or explanation from the enterprise itself is usually not necessary — the extract is the source. That same extract is also used as supporting documentation for the legal name of the company, so one document often substantiates multiple fields in the list at the same time.